Trimethylaluminium (TMAI)
Trimethylalumane (TMAI)
| Ngā kupu taurite | Trimethylaluminium, Konumohe Trimethyl, Konumohe Trimethanide, TMA, TMAL, AlMe3, Ziegler-Natta Catalyst, Trimethyl-, Trimethylalane. |
| Tau Nama | 75-24-1 |
| Tātai matū | C6H18Al2 |
| Papatipu molar | 144.17 karamu/mol, 72.09 karamu/mol (C3H9Al) |
| Āhua | Wai kore tae |
| Kiato | 0.752 karamu/cm3 |
| Te pūwāhi rewa | 15℃ (59 ℉; 288K) |
| Te pūwāhi koropupū | 125--130℃ (257--266 ℉, 398--403K) |
| Te wairewatanga i roto i te wai | Ngā tauhohenga |
| Pēhanga kohu | 1.2 kPa (20℃), 9.24 kPa (60℃) |
| Te matotoru | 1.12 cP (20 ℃), 0.9 cP (30 ℃) |
Trimethylaluminium (TMAl), hei pūtake whakarewa-waro (MO), e whakamahia whānuitia ana i roto i te umanga haurua-ira, ā, he matū matua mō te whakatakoto paparanga ngota (ALD), te whakatakoto kohu matū (CVD), me te whakatakoto kohu matū whakarewa-waro (MOCVD). E whakamahia ana hei whakarite i ngā kiriata kei roto konumohe he konumohe parakore-teitei, pērā i te konumohe waikura me te konumohe nitride. Hei tāpiri, he whānui te whakamahinga o te TMAl hei whakakorikori me tana kaihoko āwhina i roto i ngā tauhohenga hanga me te whakapūhui waro.
Ko te Trimethylaluminum (TMAI) he matū mua mō te whakatakoto waikura konumohe, ā, he matū whakakorikori Ziegler-Natta anō hoki. Koinei hoki te matū mua konumohe e whakamahia whānuitia ana i roto i te hanga o te epitaxy wāhanga-kohu whakarewa-ora (MOVPE). Hei tāpiri, ko te TMAI he matū methylation, ā, he maha ngā wā ka tukuna mai i ngā rōkete oro hei tohu mō te ako i ngā tauira hau o runga.
Ngā whakaritenga hinonga mō te 99.9999% Trimethylaluminum - He iti te silicon me te iti o te ihirangi hāora (6N TAMI-Low Si me Low Ox)
| Huānga | Hua | Whakatakotoranga | Huānga | Hua | Whakatakotoranga | Huānga | Hua | Whakatakotoranga |
| Ag | ND | <0.03 | Cr | ND | <0.02 | S | ND | <0.05 |
| As | ND | <0.03 | Cu | ND | <0.02 | Sb | ND | <0.05 |
| Au | ND | <0.02 | Fe | ND | <0.04 | Si | ND | ≤0.003 |
| B | ND | <0.03 | Ge | ND | <0.05 | Sn | ND | <0.05 |
| Ba | ND | <0.02 | Hg | ND | <0.03 | Sr | ND | <0.03 |
| Be | ND | <0.02 | La | ND | <0.02 | Ti | ND | <0.05 |
| Bi | ND | <0.03 | Mg | ND | <0.02 | V | ND | <0.03 |
| Ca | ND | <0.03 | Mn | ND | <0.03 | Zn | ND | <0.05 |
| Cd | ND | <0.02 | Ni | ND | <0.03 | |||
| Co | ND | <0.02 | Pb | ND | <0.03 |
Tuhipoka:
I runga ake i ngā mea katoa, uarahia te PPM mā te taumaha i runga i te konganuku, ā, kāore i kitea te ND
Tikanga Tātari: ICP-OES/ICP-MS
Ngā hua FT-NMR (Ko te LOD mō te poke waro me te poke hāora FT-NMR he 0.1ppm):
Te taurangi hāora <0.2 ppm (Inehia i roto i te FT-NMR)
1. Kāore i kitea he poke rauropi
2. Kāore i kitea he poke hāora
He aha te whakamahinga o te Trimethylaluminum (TMAI)?
Trimethylaluminium (TMA)- Ngā Whakamahinga me ngā Taupānga
Ko te Trimethylaluminum (TMA) he matū organoaluminum tino parakore e mahi ana hei matū matua i roto i ētahi o ngā rāngai hangahanga tino matatau. Nā tōna kaha tauhohenga me te pēhanga kohu tino pai, koinei te rauemi whiriwhiri mō te whakatakoto i ngā kiriata kei roto he konumohe tika i roto i ngā hangarau hiko me te pūngao, me te wāhanga taketake hoki i roto i te hanga polyolefin.
Kua hangaia tā mātou TMA ki ngā paerewa parakore tino pakari, me te whakahaere pakari i ngā poke huānga, ngā poke whai hāora, me ngā poke waro hei whakarite i te mahi tino pai i roto i ō tono tino uaua.
Ngā Whakamahinga Matua me ngā Ahumahi:
1. Te Hanganga o ngā Mea Ārahi me ngā Mea Hikohiko Moroiti
I roto i te umanga haurua-ira, he mea nui te TMA mō te whakatakoto i ngā kiriata angiangi me te tino tika i te tauine atomika.
* Ngā Whakarerekētanga K-Teitei: Whakamahia i roto i te Whakatakotoranga Papanga Atomika (ALD) me te Whakatakotoranga Kohu Matū (CVD) hei whakatipu i ngā kiriata angiangi ōrite, kāore he kōhao iti o te waikura konumohe (Al₂O₃), e mahi ana hei whakarerekētanga kuaha K-Teitei i roto i ngā transistors matatau me ngā taputapu mahara.
* Ngā Pūtake Whakakotahi: Ko te pūtake konumohe pai rawa atu i roto i te Metalorganic Vapor Phase Epitaxy (MOVPE) mō te whakatipu i ngā pūtake whakakotahi III-V mahi-teitei. He mea nui ēnei rauemi mō:
* Ngā Hikohiko Auau-Teitei: (hei tauira, AlGaAs, AlInGaP)
* Ngā Optoelectronics: (hei tauira, AlGaN, AlInGaN)
2. Pūngao Ma me ngā Pūngao Whakaahua
Mā te TMA ka taea te whakapiki ake i te whai huatanga me te roa o te wā i roto i ngā hangarau pūngao rā.
* Ngā Paparanga Whakakorenga Mata: Ka whakatakotoria mā te ALD, mā te Plasma-Enhanced CVD rānei (PECVD), ka whakaratohia e ngā kiriata konumohe waikura (Al₂O₃) mai i te TMA te whakakorenga mata tino pai mō ngā pūtau rā silicon tioata. Ka whakaitihia rawatia e tēnei te whakakotahitanga o ngā kaikawe utu, ka hua ake he hua nui ki te whai huatanga o te huringa pūtau me te pumau mō te wā roa.
3. Rama me te Whakaaturanga Matatau (LED)
Ko te hanga o ngā rama LED kanapa teitei, me te penapena pūngao e whakawhirinaki ana ki te TMA parakore teitei.
* Te Epitaxy LED: Hei matū mua mō te konumohe i roto i ngā tauhohenga MOVPE hei whakatipu i ngā paparanga hohe (hei tauira, AlGaN) i roto i ngā LED kikorangi, kakariki, me te ultraviolet.
* Te Whakakore i te Pūrere: Hei whakatakoto i ngā kiriata konumohe waikura, konumohe nitride rānei hei whakarei ake i te pai o te tango whatu, hei whakaroa hoki i te roa o te mahi a ngā pūrere LED.
4. Te Whakakorikori Ahumahi me te Hanga Polymer
Ko te hiranga ahumahi o TMA e ahu mai ana i tana tūranga i roto i te whakaterenga.
* Te Whakakorikori Polyolefin: Koinei te rauemi tīmatanga matua mō te hanga o te Methylaluminoxane (MAO), he kaiwhakakorikori tahi nui i roto i ngā pūnaha whakakorikori Ziegler-Natta me te metallocene. Mā ēnei pūnaha te nuinga o ngā kirihou polyethylene me te polypropylene o te ao e whakaputa.
Ngā Āhuatanga Matua me ngā Painga:
* Te Parakore Tino-Teitei: Ka āta whakahaeretia kia whakaitihia ngā poke e whakaiti ana i te mahi hiko me te ngohe whakatere.
* Kaitātari Pai Rawa: He tino pai te piki me te heke, te pumau o te wera, me ngā āhuatanga pirau ma mō te whakatakotoranga kiriata kounga teitei.
* Paerewa Ahumahi: Ko te puna konumohe pono, kua whakapumautia mō ngā tukanga MOVPE, ALD, me CVD puta noa i ngā whare R&D me ngā whare whakaputa o te ao.
* Tūāpapa mō ngā Kirihou: He rauemi mata matua e āhei ai te hanga i ngā pūmua polyolefin whai hua, whai tikanga hoki.
Whakakape: He rauemi pyrophoric, he rauemi tairongo ki te makuku te Trimethylaluminum, e hiahia ana ki ngā tikanga whakahaere me te haumaru motuhake. He whakaahuatanga noa iho ngā mōhiohio e whakaratohia ana. Ko te kawenga a te kaiwhakamahi ki te whakahaere i tēnei rauemi kia rite ki ngā aratohu haumaru katoa e tika ana, me te whakatau i tōna pai mō tētahi tono motuhake.
